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14 lines
350 B
C++
14 lines
350 B
C++
#include <Columns/ColumnNullable.h>
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namespace DB
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{
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/** Replace Nullable key_columns to corresponding nested columns.
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* In 'null_map' return a map of positions where at least one column was NULL.
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* @returns ownership column of null_map.
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*/
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ColumnPtr extractNestedColumnsAndNullMap(ColumnRawPtrs & key_columns, ConstNullMapPtr & null_map);
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}
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